NTSB CAROL · Event
Event DCA19CA167
Aircraft involved
Probable cause & findings
an improper landing flare, which resulted in a bounced landing and substantial damage.
Factual narrative
On June 15, 2019, about 12:55 eastern daylight time (EDT), United Airlines flight 627, a Boeing 757-224, N26123, experienced a hard landing at Newark International Airport (KEWR), Newark, New Jersey. There were no injuries to the 172 passengers and crew onboard, and the airplane received substantial damage. The flight was operating under Title 14 Code of Federal Regulations Part 121 as a regularly scheduled domestic passenger flight from Denver International Airport (KDEN), Denver, Colorado. The first officer (FO) was the pilot flying, and the captain was pilot monitoring. The takeoff, cruise, and decent were normal. The captain stated that it was an Initial Operating Experience (IOE) flight for the first officer. The auto speed brake system on the airplane was deferred in accordance with the Minimum Equipment List, and had been briefed, and all checklists had been completed. The captain stated that the FO flew a “solid” approach profile with few minor airspeed deviations, all of which were corrected immediately. The crew stated that during the descent to runway 22L the wind became gusty (220 degrees at 14 kts, gusting to 22 kts), and they increased the VREF speed in accordance with company procedures. At 500 feet, the airplane was on profile, on speed and stable. According to the crew the initial touchdown was smooth, on centerline, and in the touchdown zone. Upon touchdown on the main wheels, the captain manually deployed the speed brakes and the nose pitched up. To avoid a tailstrike, the captain said she physically blocked the yoke from moving back and instructed the FO to pitch forward. The airplane then bounced on the runway. The airplane was equipped with a L-3/Fairchild FA2100 Flight Data Recorder (FDR). FDR data showed that at 12:54:54 EDT, the airplane was on final approach to runway 22L with the autopilot off, glideslope mode engaged, and both flight directors on. At 12:55:14 EDT, with a pitch angle of 2.8 degrees, and the speed brake handle in the down (unarmed) position, the main landing gear (MLG) weight-on-wheels (WOW) parameter changed to GROUND. At 12:55:16 variations in the vertical acceleration, pitch, elevator, and control column parameters increased in magnitude. At 12:55:17, MLG WOW parameter changed back to AIR for one second, then back to GROUND for one second, then back to AIR for one second, before finally cycling back to GROUND. At 12:55:20 the nose gear WOW indicated GROUND for the first time, along with the largest magnitude vertical acceleration of 1.6042 g’s. Both left and right engine thrust reversers indicated deployed six seconds after initial MLG touchdown. Postaccident inspection of the airplane revealed extensive structural damage to the right and left forward area (41/43 station) of the fuselage. There was extensive damage to twelve skin panels, eleven severed RH stringers and twelve buckled LH stringer sections, multiple underlying damaged structural components, and damage to the nose landing gear and support structure Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).
- — Personnel issues-Action/decision-Action-Delayed action-Copilot
Verbatim from NTSB's published report. Source file
NTSB_2019_DCA19CA167.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (autopilot, flight director). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Embry-Riddle Scholarly Commons 1993 · Journal article (JAAER)
A Cost Analysis: Re-Engining a Boeing 727-200 (Advanced) Versus Buying a New Boeing 757-200
The Boeing 727-200 and 757-200 are both narrowbody aircraft designed for short- to medium-range flights carrying 164 to 214 passengers.
- arXiv 2025 · arXiv preprint
ROSflight 2.0: Lean ROS 2-Based Autopilot for Unmanned Aerial Vehicles
ROSflight is a lean, open-source autopilot ecosystem for unmanned aerial vehicles (UAVs). Designed by researchers for researchers, it is built to lower the barrier to entry to UAV research and acceler…
- arXiv 2025 · arXiv preprint
ROSplane 2.0: A Fixed-Wing Autopilot for Research
Unmanned aerial vehicle (UAV) research requires the integration of cutting-edge technology into existing autopilot frameworks.
- arXiv 2024 · arXiv preprint
A Data-Driven Autopilot for Fixed-Wing Aircraft Based on Model Predictive Control
Autopilots for fixed-wing aircraft are typically designed based on linearized aerodynamic models consisting of stability and control derivatives obtained from wind-tunnel testing.
- arXiv 2022 · arXiv preprint
Experimental Flight Testing of a Fault-Tolerant Adaptive Autopilot for Fixed-Wing Aircraft
This paper presents an adaptive autopilot for fixed-wing aircraft and compares its performance with a fixed-gain autopilot.
- NASA NTRS 2022 · Technical Memorandum (TM)
The Effects of Training and Flight Director Use on Pilot Monitoring Performance: A Sensemaking Approach
The need for improved pilot monitoring and awareness has been widely recognized, and training is a possible intervention. Based on our sensemaking-model of monitoring, we identified key properties of …
Browse the full corpus — academia portal ↗